Before you replace the IAC valve, you should take it out of the throttle body and clean its passageway along with the rest of the throttle body. Can't guarantee this will solve the problem, but it is a good tune-up place to start. Remember this could be a whole slew of tune-up related items.
I'm not having any probs, at least now, but was thinking of getting a tune-up. However, I have new plugs, new wires, PCV, ... A lot of the "tune-up package" the shop has here I have already solved. At least most of it I think. Except for cleaning the TB. Is this something that can be done easily??? Would I have to take it off?? (Yeah that'* probably a dumb question. Sorry) Just don't want to pay someone just to clean the TB.
What else is typically done in a tune-up? Thanks